Quote:
Originally Posted by ENunn
Unfortunately the normal linear track doesn't sound good at all. I can expect the normal muffleness but this one had this awful constant popping and digital bloops in it.
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Sounds like what's called "motorboating" due to a faulty amplifier somewhere in the chain. I notice on the spectral analyzer it seems to change in frequency a little, as if some of the picture signal (changing image) is bleeding into the audio, but cant be sure. Having a little expertise in this audio area I'd probably try temporarily alterating the A/C head height to see if it made an improvement. Please dont attempt this unless you have the skills and knowledge.
Yes it's sure muffled. There seems a nasty dip in the spectrum around 3 kHz which degrades speech clarity. The entire audio track could probably be brightened up considerably with one small tweak of the A/C head azimuth screw but again unless you know what you are doing please dont attempt this. The same for adjusting A/C head height. These are specialist custom tweaks.
IF there was nothing else I could do, I'd probably high pass filter the audio, cutting the lows below about 250 Hz. It wont totally remove the noise but reduce it at the cost of reduced bass in the wanted audio. For a more targeted approach I'd try a narrower band De Hum filter.
In your sample there's loud talking, band, audience going on, making it hard to get a real handle on the noise characteristics. I'd look for a quiet section of the program where the pulsing can be heard clearly. It might help if you upload such a quiet passage so the noise can be more easily analyzed and commented on. Find a place in the tape where ideally
only the problem noise is present. No dialogue, music, effects etc.
Changing the tracking control shouldnt make any difference to the linear audio track. It only affects the video and HiFi audio.